Home / 191,117.77-286,711.25-78,735.53

Finding the Fourth Proportional to 191,117.77, 286,711.25 and 78,735.53

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Solution

The fourth proportional to 191,117.77, 286,711.25 and 78,735.53 is: 118,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,117.77 : 286,711.25 = 78,735.53 : x
  2. Step 2: Convert to fraction form
    191,117.77/286,711.25 = 78,735.53/x
  3. Step 3: Cross multiply
    191,117.77x = 286,711.25 × 78,735.53
  4. Step 4: Simplify right side
    191,117.77x = 22,574,362,225.71
  5. Step 5: Solve for x
    x = 22,574,362,225.71/191,117.77
  6. Step 6: Final answer
    x = 118,117.55

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1.5x scale

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.