Home / 100,483.49-138,663.62-56,875.10

Finding the Fourth Proportional to 100,483.49, 138,663.62 and 56,875.10

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Solution

The fourth proportional to 100,483.49, 138,663.62 and 56,875.10 is: 78,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,483.49 : 138,663.62 = 56,875.10 : x
  2. Step 2: Convert to fraction form
    100,483.49/138,663.62 = 56,875.10/x
  3. Step 3: Cross multiply
    100,483.49x = 138,663.62 × 56,875.10
  4. Step 4: Simplify right side
    100,483.49x = 7,886,506,276.17
  5. Step 5: Solve for x
    x = 7,886,506,276.17/100,483.49
  6. Step 6: Final answer
    x = 78,485.60

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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.