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Finding the Fourth Proportional to 112,458.51, 155,192.90 and 64,710.90

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Solution

The fourth proportional to 112,458.51, 155,192.90 and 64,710.90 is: 89,301.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,458.51 : 155,192.90 = 64,710.90 : x
  2. Step 2: Convert to fraction form
    112,458.51/155,192.90 = 64,710.90/x
  3. Step 3: Cross multiply
    112,458.51x = 155,192.90 × 64,710.90
  4. Step 4: Simplify right side
    112,458.51x = 10,042,671,909.06
  5. Step 5: Solve for x
    x = 10,042,671,909.06/112,458.51
  6. Step 6: Final answer
    x = 89,301.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.