Home / 103,136,856.47-142,331,554.58-56,728,328.28

Finding the Fourth Proportional to 103,136,856.47, 142,331,554.58 and 56,728,328.28

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Solution

The fourth proportional to 103,136,856.47, 142,331,554.58 and 56,728,328.28 is: 78,286,574.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136,856.47 : 142,331,554.58 = 56,728,328.28 : x
  2. Step 2: Convert to fraction form
    103,136,856.47/142,331,554.58 = 56,728,328.28/x
  3. Step 3: Cross multiply
    103,136,856.47x = 142,331,554.58 × 56,728,328.28
  4. Step 4: Simplify right side
    103,136,856.47x = 8,074,231,151,999,591
  5. Step 5: Solve for x
    x = 8,074,231,151,999,591/103,136,856.47
  6. Step 6: Final answer
    x = 78,286,574.06

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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.