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Finding the Fourth Proportional to 101,386.04, 139,905.50 and 56,055.67

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Solution

The fourth proportional to 101,386.04, 139,905.50 and 56,055.67 is: 77,352.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,386.04 : 139,905.50 = 56,055.67 : x
  2. Step 2: Convert to fraction form
    101,386.04/139,905.50 = 56,055.67/x
  3. Step 3: Cross multiply
    101,386.04x = 139,905.50 × 56,055.67
  4. Step 4: Simplify right side
    101,386.04x = 7,842,495,909.14
  5. Step 5: Solve for x
    x = 7,842,495,909.14/101,386.04
  6. Step 6: Final answer
    x = 77,352.82

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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.