Home / 210,900,678.08-316,352,068.90-86,471,271.51

Finding the Fourth Proportional to 210,900,678.08, 316,352,068.90 and 86,471,271.51

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Solution

The fourth proportional to 210,900,678.08, 316,352,068.90 and 86,471,271.51 is: 129,707,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,900,678.08 : 316,352,068.90 = 86,471,271.51 : x
  2. Step 2: Convert to fraction form
    210,900,678.08/316,352,068.90 = 86,471,271.51/x
  3. Step 3: Cross multiply
    210,900,678.08x = 316,352,068.90 × 86,471,271.51
  4. Step 4: Simplify right side
    210,900,678.08x = 27,355,365,642,979,108
  5. Step 5: Solve for x
    x = 27,355,365,642,979,108/210,900,678.08
  6. Step 6: Final answer
    x = 129,707,338.51

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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.