Home / 147,745,009.40-221,617,514.10-86,523,006.20

Finding the Fourth Proportional to 147,745,009.40, 221,617,514.10 and 86,523,006.20

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Solution

The fourth proportional to 147,745,009.40, 221,617,514.10 and 86,523,006.20 is: 129,784,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,745,009.40 : 221,617,514.10 = 86,523,006.20 : x
  2. Step 2: Convert to fraction form
    147,745,009.40/221,617,514.10 = 86,523,006.20/x
  3. Step 3: Cross multiply
    147,745,009.40x = 221,617,514.10 × 86,523,006.20
  4. Step 4: Simplify right side
    147,745,009.40x = 19,175,013,546,502,888
  5. Step 5: Solve for x
    x = 19,175,013,546,502,888/147,745,009.40
  6. Step 6: Final answer
    x = 129,784,509.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.